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A 74-year-old woman presents to urgent care with epistaxis, controlled on arrival. She is also complaining of lightheadedness and fatigue that’s been going on for the past 2 weeks.
View the ECG captured above and consider what your diagnosis and next steps would be. Resolution of the case is described on the next page.

Case presented by Adam M. Woods, MD, PGY3, Chief Resident, The University of Texas Health Science Center at Houston.
74-Year-Old With Lightheadedness
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